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FALCON
EN2Z-0962GE51 R0715
RESULT:
The input datapoints in manual override will display the "overridden"
(OVR) and "out of service" (OOS) flag checked.
The BACnet Standard specifies an input to be "out of service",
when it is decoupled from the field signal.
When an input datapoint is set into Manual mode and its value will be overwritten,
the ´overridden` and ´out of service` flags are set. The enabled ´out of service` flag
indicates that the datapoint is decoupled from the physical input (field device) to
prevent a field device value from instantly overwriting the manual value in the next
scan cycle. The ´fault` flag is enabled if the reliability is ´Unreliable Other` or ´No
Sensor`.
´Unreliable Other` tells that INVALID value has been received. For the handling of
INVALID value packets, the user can apply the INVALID Match option in CARE
which will cause the following in case an INVALID value has been sent:
• With INVALID Match
The point will work with the value defined by INVALID Match
• No INVALID Match
The point will work with last received value
´No Sensor` indicates that no NV update has been received. The heartbeat timer
has expired and the subsequent poll has failed. Note that the heartbeat must have
been activated in CARE..
No Error Detected
No Sensor
Unreliable Other
When an output datapoint is set into Manual mode, its current value will be
overwritten by the manual value, which then has the higher priority = ´Manual
Operator` (8) and the overridden flag is set. As long as no other process of higher
priority than (8) writes to the analog output, the manual value remains present.
The ´fault` flag is enabled if the reliability is ´No Output` which tells that the
Acknowledged Service has failed.
No Error Detected
No fault has been detected.
No Output
Acknowledged Service has failed, or Hardware may be not
connected
The ´out of service` flag is enabled, if NV updates to the output are blocked, for
example by the EBI.
98
Status Flag Indications
Input Point Status Flags
Loop is in proper condition, that is, present value is
reliable; that is, no other fault has been detected.
´No Sensor` tells that no NV update has been
received. The heartbeat timer has expired and the
following poll has failed. Note that the heartbeat
must have been activated in CARE
Sensor may not be connected.
Invalid Value is received.
With INVALID Match:The point will work with the
value defined by INVALID Match
No INVALID Match: The point will work with last
received value. The controller has detected that the
present value is unreliable, but none of the other
conditions describe the nature of the problem. A
generic fault other than those listed above has been
detected, e.g., a Binary Input is not cycling as
expected.
Output Point Status Flags
USER GUIDE
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